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  1. #1
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    Default Air drier for compressed airline.

    Good evening every one, I have read in a few posts about an air drier that you can fit into your compressed airline setup, when fitting out our sheds, could some one please explain to me what they are actually and where would I purchase one from. I am just about to put in a permanent airline in my 30 mtr shed, thinking about 4 drop lines along one side. I assume they are electric, to get the heat. was thinking of using galvanised pipe but reading the comments it seems that poly is the way to go. thanks for any feed back, cheers peter

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  3. #2
    Join Date
    Feb 2006
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    Default

    There are many ways to remove water from compressed air and they each have their advantages and disadvantages.
    I assume you have seen this thread?
    Compressed Air Feedline For Workshop?

    If you only have low air flow requirements (ie air brush) a coil or multiple loops of copper with suitably placed drain taps in line with the compressor will condense out most of the water.
    You would have to make these yourself.

    The cheapest and simplest water removed is a coarse particle filter and moisture trap but they are not very efficient.
    Usually they incorporate a pressure reducing valve which can come in handy for things like spray painting
    eg https://www.bunnings.com.au/ozito-1-...lator_p6210579
    I have one and it's what I would call, an OK pressure regulator but "not very good" at removing water.

    A variation on the above for ~$140 is something like this
    https://sydneytools.com.au/product/u...ir-line-filter.
    The filters are pretty exxy (~$20 etc!) and have to be replaced every so often (but not as often as they say )s o you may want to look at something like this
    Phase 3 Air Filter | Amaxi that use ordinary toilet rolls as filters, they cost a bit more but will pay for themselves in time because tower rolls can be had for <$1
    These are commonly used for plasma cutters and spray painting which need reasonably dry air to work properly.

    The most efficient driers especially for high flow situations are refrigerated and will set you back about $1500 - $2000
    EG See https://www.machineryhouse.com.au/Re...ted-Air-Dryers
    NB you need to install a fine particle filter on these which also adds a few bob
    They can be obtained for much less than this but given the corrosive nature of the water produced by the drying process you might find they don't last very long and they may use more power than the better ones.

    If you have even more $$$ to throw at the problem you could get a medical grade drier

    You can of course make your own using a fridge and an LPG gas cylinder.
    This will take up more room than a dedicated drier
    Old fridges in particular will use a lot of power especially f you run them continuously.
    If you don't run them continuously the fridge and tank will take some time to fully cool down ie a PITA especially if you need/want to use it NOW.

    You can also make up your own water trap from a water purification filter holder. That's what I intend to do once I gain a bit of energy from my latest meds.

  4. #3
    Join Date
    Nov 2008
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    condong n.s.w.
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    Default

    thank you BobL, your reply was appreciated. and now I have a lot better understanding of it all and will purchase one of the same type as you put in the Sydney tools link. thank you for your time. regards peter flack toowoomba

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